This is a prospective cohort study, which will be evaluated 30 women between 30 and 50 years underwent surgery lipoabdominoplasty without respiratory or prior cardiac comorbidities and body mass index (BMI) ≤ 30 kg / cm2. women smokers are deleted and / or a history of smoking greater than 10 years, FEV1 <80% predicted, FEV1 / FVC <70% of predicted and unable to understand the commands to perform the proposed methods. For evaluation of diaphragmatic mobility and thickness will be used high-resolution ultrasound with a convex transducer of 3.5 MHz and 7.5 MHz linear transducer, respectively. The assessment of the regional distribution of ventilation thoracoabdominal system will be made using the optoelectronic plethysmograph (POE). The strength of the inspiratory and expiratory muscles is measured through a digital manometer connected to a nozzle with an orifice of 2 mm to reduce the closing pressure of the glottis. A portable spirometer is used for assessment of pulmonary function and evaluation of dyspnea will be used modified Borg scale. The data will be evaluated in the preoperative period, 10 days and 30 days postoperatively.